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Dulles Intl

$538+ Cheap flights from Gatwick (LGW) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
1 adult, Economy
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Cheap flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles Intl
Explore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 20, 2026.

This TravelUp deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:00 pm
LGW
-
IAD
1 stop33h 35m
TAP AIR PORTUGAL
Sun 11/810:30 pm
IAD
-
LGW
1 stop12h 15m
TAP AIR PORTUGAL
Deal found 5/18$622
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:00 pm
LGW
-
IAD
1 stop33h 32m
Multiple Airlines
Tue 7/141:36 pm
IAD
-
LGW
1 stop15h 24m
Multiple Airlines
Deal found 5/17$627
This Booking.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Mon 9/218:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/17$631
This oojo deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 9/2511:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 5/18$632
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Sat 11/77:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 5/18$633
This Icelandair deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Tue 10/138:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/18$635
This Icelandair deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Tue 10/138:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/16$636
This Icelandair deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Mon 10/128:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/19$637
This Icelandair deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Fri 10/98:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/19$639
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 9/3011:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 5/18$640

Find flight deals from Gatwick to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$622
(TravelUp)

One-way from

$538
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$558
Provider with most accurate pricing for London Gatwick-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Gatwick-Washington, D.C. Dulles Intl flights.
Search Deals
From London Gatwick to Washington, D.C. Dulles Intl
Search Deals
One-way flight from London Gatwick to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Gatwick to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 20, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 6/23

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Fri 7/17

11:20 pm-2:40 pm

1 stop10h 20m

$697
Quickest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 7/16

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Thu 7/30

6:15 pm-9:25 am

1 stop10h 10m

$712

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 8/18

5:00 pm-11:49 am

2 stops23h 49m

Washington, D.C. Dulles Intl

Sun 8/30

6:15 pm-9:25 am

1 stop10h 10m

$721

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 8/27

10:25 am-11:26 pm

2 stops18h 01m

Washington, D.C. Dulles Intl

Wed 9/9

9:45 pm-4:00 pm

1 stop13h 15m

$721

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/1

5:00 pm-11:51 am

2 stops23h 51m

Washington, D.C. Dulles Intl

Thu 9/10

9:45 pm-4:00 pm

1 stop13h 15m

$722

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 10/8

10:25 am-11:02 pm

2 stops17h 37m

Washington, D.C. Dulles Intl

Mon 10/12

6:15 pm-4:00 pm

1 stop16h 45m

$731

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 9/17

10:25 am-10:59 pm

2 stops17h 34m

Washington, D.C. Dulles Intl

Thu 9/24

9:45 pm-4:00 pm

1 stop13h 15m

$809

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 11/15

10:40 am-8:35 pm

1 stop14h 55m

Washington, D.C. Dulles Intl

Fri 12/4

10:30 pm-3:45 pm

1 stop12h 15m

$846

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 8/25

5:00 pm-11:49 am

2 stops23h 49m

Washington, D.C. Dulles Intl

Mon 9/21

5:30 pm-4:00 pm

2 stops17h 30m

$849

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 6/1

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Sun 6/7

11:20 pm-2:40 pm

1 stop10h 20m

$878

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 23 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Gatwick to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Gatwick with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

How much does it cost to fly round-trip from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in 14h 10m. Fly via Icelandair, Delta, or Virgin Atlantic to get the fastest option. Airlines will cover a distance of 3683 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Gatwick to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Gatwick to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Dulles Intl.

  • Can I find deals for business class flights from Gatwick to Dulles Intl?

    Yes. Cheapflights offers flight deals from Gatwick to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Hanover
Chantilly
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Reston
Hunt Valley

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Alternative routes for Gatwick to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
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